YN-568EX II is the 2nd generation of the YN-568EX.The difference between these two generations is that the YN-568EX II can be a Master flash, while the YN-568EX can’t. In other respects, they are the same.
I’m fond of features of cheap, and this flash product by Yongnuo fits the bill. Why would you want to go for the 3x costlier Canon alternative then? Well, that one is more reliable! In my usage, I faced syncing issues at times, more particularly when NiMH batteries run low. Also on generic Alkaline batteries, I faced syncing issues. That can be troublesome when you’re working on a project and shooting continuously. Give the flash a break when such a problem is faced, and charge the batteries meanwhile. Should work just fine! Apart from that, the flash works just as it is supposed to be!
The Yongnuo YN568EX II is compatible with all Canon EOS digital SLR cameras. It can also communicate using optical wireless with other Canon Speedlites that have “EX” in the name. No radio wireless.
Maximum Guide Number 58m @ 105mm & ISO 100
Comparative Guide Number 39m @ 35mm & ISO 100
Zoom head: Yes
Focal length coverage: Auto, 24-105mm
Coverage with flip-down diffuser: 14mm
Auto zoom for sensor size: Yes
Flash bounce card: Yes
Flash Head Tilt & Swivel
Up: 45, 60, 75 and 90°
Down: 7°(for subjects in the range of 0.5 to 2m)
Left: 60, 75, 90, 120, 150 and 180°
Right: 60, 75, 90, 120, 150 and 180°
Manual / output settings: Yes – 1/1- 1/128
Manual steps: 1/3 stop intervals
Canon E-TTL II metering system with flash exposure compensation (FEC), flash exposure lock (FE lock) and flash exposure bracketing (FEB)
Does the HSS work with Yongnuo’s YN-622C triggers?
Yes. All of the advanced functions, including HSS, work with this trigger and off camera flash.
It’s a great product, and I’m really surprised that it doesn’t get more attention than it does.